Interlochen, Michigan, sits in USDA hardiness zone 6a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
The conditions favor cabbage, blackberry, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Interlochen, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Interlochen lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Interlochen — soil, climate, flood, and parcel records. How we handle your address.
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Interlochen — the short answer
Interlochen, Michigan: USDA zone 6a, about 177 days between hard freezes, across 794 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~177
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 794 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 6a is Interlochen's average, not your lot's — a low corner or a tree line moves it. Against Interlochen's 177-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Interlochen
Each reading below is measured for Interlochen itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredInterlochen runs about 177 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredInterlochen sits in USDA hardiness zone 6a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Interlochen is in
Interlochen sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Interlochen's own centroid, and it is not what its county reads: Grand Traverse County is mostly Northern Lakes and Forests. The wider page above you is answering a different question about different ground.
What Grows in Interlochen
Every plant below cleared Interlochen's own zone 6a and its 177-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Interlochen?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 27 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Interlochen
Closest first, within ~10 miles of Interlochen. Listing isn't leaking, and distance isn't exposure.
- Former Gas StationUnderground Storage Tanks · 1200 ft
- Buds ResortUnderground Storage Tanks · 1900 ft
- 26N 12W 16ACB01 GRAND TRAVERSE CO (261216)Nitrate · 1900 ft
- Interlochen EZ MartUnderground Storage Tanks · 0.7 mi
- Amoco Oil Serv. Station #7358Underground Storage Tanks · 0.7 mi
- 26N 12W 21BDB01 GRAND TRAVERSE CO (261221)Nitrate · 0.7 mi
- INTERLOCHEN CTR FOR THE ARTSBrownfields · 0.9 mi
- 261210Nitrate · 0.9 mi
- Interlochen Center for the Arts ICAUnderground Storage Tanks · 1.2 mi
- Long Lake ResortUnderground Storage Tanks · 1.4 mi
- 26N 12W 18AAA01 GRAND TRAVERSE CO (261218)Nitrate · 1.8 mi
- 26N 12W 23CBD01 GRAND TRAVERSE CO (261223)Nitrate · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Interlochen's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Interlochen.
Sources Checked
within ~10 miles of Interlochen
Severity Distribution
within ~10 miles of Interlochen
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Interlochen, Nitrate runs higher than the national average — 142 sites within ~10 miles of Interlochen. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Interlochen
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Interlochen average
Your land is one point inside Interlochen
Everything above resolves to Interlochen as a whole — one PHZM band and one 28°F frost record, read across 794 acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Interlochen Average
Interlochen Average
- ●USDA Zones 6a, averaged across Interlochen
- ●One soil character for all of Interlochen
- ●Frost dates read at Interlochen's scale: May 3 to Oct 27
YOUR Parcel
- ✓Your exact zone, not Interlochen's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Interlochen
Pull a site-specific report for your exact address in Interlochen, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Interlochen averages can't show:
We read public map data around Interlochen — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Interlochen average
How we know this about Interlochen
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Interlochen’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Interlochen
When does frost risk typically end in Interlochen?
The last hard freeze (28°F) in Interlochen typically lands around May 3, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about May 24.
When is the first frost in Interlochen?
The first hard freeze (28°F) in Interlochen typically arrives around Oct 27, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 13, so the watching starts about Sep 27 — about 177 days after the spring freeze cleared.
How long is the growing season in Interlochen?
Measured between 28°F hard freezes, Interlochen sees about 177 frost-free days — roughly May 3 through Oct 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 24 to Oct 13, about 142 days.
Is the soil safe to grow vegetables in Interlochen?
The federal record around Interlochen is a meaningful one — 469 documented sites, mostly Underground Storage Tanks entries (166), the nearest Underground Storage Tanks record about 0.2 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Interlochen?
From about Sep 27 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Oct 27 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Oct 27. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Interlochen's scale — its 6a band and its 177-day season. Your yard writes its own version of Interlochen's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Interlochen’s own scale
6 of the readings below were taken at Interlochen's own scale — its own ~177-day season between 28°F freezes, the 794 acres it covers and 469 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Interlochen's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Interlochen's own 28°F hard-freeze dates, about May 3 and Oct 27 and the ~177-day span between themNOAA 1991–2020 Climate Normals
- 469 documented contamination sites on the federal record near Interlochen, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Interlochen's boundary and the 794 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~177-day seasonGrowable Ground crop-matching engine
- Interlochen sits in the North Central Hardwood Forests — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Interlochen's 794 acres read through its county's SSURGO summaryfrom Grand Traverse County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Grand Traverse County
- The growing challenges every Michigan grower plans around — written at state scale, so they stay on the state guidefrom Michigan
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Grand Traverse County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Interlochen's 794 acreswhy one lot differs from the next →
- Which side of Interlochen you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 794 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Interlochen-wide figureread your own land →